Texas Instruments TXB0106PWR

Overview

TXB0106PWR from Texas Instruments is a 6-bit bidirectional voltage-level translator with auto-direction sensing, supporting 1.2V–3.6V on A port and 1.65V–5.5V on B port (VCCA ≤ VCCB), ±15kV HBM ESD protection on B port, 4μA max ICC, and Ioff partial-power-down capability. It enables seamless logic-level translation between mixed-voltage subsystems in portable USB peripherals and mobile interface bridges.

For engineers reviewing the TXB0106PWR datasheet, TXB0106PWR pinout, TXB0106PWR application, or TXB0106PWR equivalent, key selection criteria include VCCA/VCCB voltage compatibility, auto-direction operation without control lines, high-impedance state behavior during power sequencing, and package-specific timing performance at target data rates up to 100 Mbps.

Technical Context

The TXB0106PWR implements a buffered, edge-rate-accelerated architecture using one-shot circuits per I/O pair to enhance transition speed without external direction control. Each A/B I/O cell contains complementary PMOS/NMOS drivers with dynamic impedance reduction (70Ω @ 1.2–1.8V, 50Ω @ 1.8–3.3V, 40Ω @ 3.3–5V) during signal edges.

VCCA-referenced OE input enables tri-state control of all six channels simultaneously; VCC isolation ensures high-impedance outputs when either supply drops to GND. The device requires ≥±2mA drive strength from connected logic and supports DC-coupled push-pull CMOS signals only - not open-drain buses.

Key Specifications

Pinout & Package

TSSOP-16 (PW) package: 5.00 mm × 4.40 mm body, 0.65 mm pitch, exposed pad optional (not electrically required).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar bidirectional level-shifting applications.

Compared with TXS0106QPWRQ1 and SN74AVC4T245PWR, the TXB0106PWR uniquely combines auto-direction sensing, VCC isolation, and ±15kV B-port ESD - making it optimal for compact, hot-pluggable mobile interfaces where GPIO count and robustness are constrained.

Availability

TXB0106PWR is available at Aetrix Electronics and suitable for USB OTG bridges, smartphone audio subsystems, and tablet display interfaces requiring stable component supply, long-term lifecycle support, and RoHS-compliant TSSOP packaging.

Supply support for TXB0106PWR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor company delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.

The TXB0106PWR belongs to TI's voltage translation portfolio, engineered specifically for low-power, bidirectional logic-level bridging in space-constrained portable devices with mixed-voltage SoC interfaces.

FAQ

What voltage combinations are supported by the TXB0106PWR?

The TXB0106PWR supports A-port voltages from 1.2V to 3.6V and B-port voltages from 1.65V to 5.5V, with the strict requirement that VCCA ≤ VCCB. Valid combinations include 1.8V A ↔ 3.3V B, 1.2V A ↔ 1.8V B, and 3.3V A ↔ 5V B. Operation outside these ranges or with VCCA > VCCB may cause malfunction or damage to the TXB0106PWR.

Does the TXB0106PWR require external pull-up or pull-down resistors?

No, the TXB0106PWR does not require external pull-up or pull-down resistors for normal operation. Its auto-direction architecture uses weak internal drivers that allow external logic to override direction without resistive biasing. Pull resistors are only needed if bus idle-state definition is required - and then only values ≥50 kΩ should be used to avoid loading the TXB0106PWR outputs.

How does the TXB0106PWR behave during power-up or power-down sequencing?

The TXB0106PWR features VCC isolation: if either VCCA or VCCB drops to GND, all A- and B-port outputs automatically enter high-impedance state. This prevents contention and back-driving during asymmetric power sequencing. OE can be tied to GND via a pulldown resistor to guarantee tri-state at startup, but it is not mandatory due to this built-in safety feature.

Can the TXB0106PWR translate open-drain signals such as I²C?

No, the TXB0106PWR is designed exclusively for push-pull CMOS logic translation. It cannot reliably handle open-drain buses like I²C because its auto-direction sensing relies on active drive strength from both sides. For I²C, TI recommends the TXS0106 or TXS0108 series, which integrate strong pull-up drivers and are explicitly characterized for open-drain operation.

What is the maximum data rate achievable with the TXB0106PWR in TSSOP-16 package?

In the PW (TSSOP-16) package, the TXB0106PWR achieves up to 100 Mbps when VCCA = 3.3V and VCCB = 5V, with 10 ns minimum pulse width. At lower voltage combinations - e.g., VCCA = 1.5V / VCCB = 1.8V - the maximum data rate is 50 Mbps. Performance is package-dependent; WQFN and UQFN variants offer slightly better timing due to lower parasitics.